New resin-like product.



To'ell whom it concern:

, UNITED STATES PATENT curios- CUR/l GENTSOH, OF VOHWINKEL, NEAR ELBERFELD, GERMANY ASSIGNOR TO FARBEN- FABRIKEN VORM. FRIEDR. BAYER & 00., OF'ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

NEW RE SIN-LIKE PRODUCT.

Specification of Letters Patent.

Patented June 8, 1909.

' Application filed February 26, 1908'. Serial No. $17,901.

Be it known that I, Cum GENTSCH, doctor of philosophy, chemist, citizen of the German Em ire, residing at Vohwinkel, near Elberfel Kingdom of Prussia, Germany, have invented new and useful Improvements in New Resin-Like Products, of which the following is a specification.

My invention relates to the manufacture.

and production of a new resin like product which is obtained by treating with acids: mixtures of ortho-cresol and formaldehyde or mixtures of'ortho-cresol and compounds capable of forming formaldehyde under these conditions. The acid reacts as a condensing agent. The new condensation compound has neither the 'corrosivequalities of ortho-cresolnor its unpleasant smell nor the unpleasant odor of the. formaldehyde condensation products with crude cresol. It resembles hard'transparent resins and may be used as a commercial substitute for shellac. In carrying out my invention practically I can proceed as follows, the arts being by weight: 5 parts of concentrated hydrochloric acid are added to a mixture of 100 parts of ortho-crcsol with 70 parts of a 40 per cent. formaldehyde solution and 60 parts of water. The mixture while being stirred is heated to about 100 C. for several hours. The product thus obtained is then purified b a thorough washing with water or by a pro onged treatment with steam.

The new product is a straw-yellow to light brown resin soluble in dilute alkalies,\eas1l soluble in methyl alcohol, eth l alcoho acetone, carbon disu'lfid, acety ene tetra ble in benzene, dichlorhydrin, carbon tetrachlorid and -ter ineol and is insoluble in oil of turpentine, fatty oils such as linseed oil and acids.- When heated .to above 90 C. it softens and it melts at about from 110'120 C. 'It'furnishes a well drying brilliant and odorless coating on being used as a varnish or polish for Wood, iron etc.

Having described" my invention and in What manner the same is to be performed what I claim as new and desire to secure by Letters Patent is The herein-described new resin like product, which can be obtained by treating with acids, mixtures of ortho-cresol and formaldehyde, which product is a straw-yellow to light brown resin, soluble in dilute alkalles,

easily soluble in methyl alcohol, ethyl alcohol, acetone, carbon disulfid, acetylene tetraehlorid and chloroform, scarcely soluble in benzene, dichlorohydrin, carbon tetrachlorld and terpineol and insoluble in oil of turpentine and linseed oil; softening when heated to above 90 C.- and melting at about from 110-120 C. and furnishing a well drying brilliant and odorless coating on being used as a varnish or polish, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CURT GENTSGH. [Ls] Witnesses:

O'rro Kome, WM. WASHINGTON Bntmswrcx. 

